The Listing Rules (LR) are a set of regulations applicable to any company listed on a United Kingdom stock exchange, subject to the oversight of the Financial Conduct Authority (FCA). The Listing Rules set out mandatory standards for any company wishing to list its shares or securities for sale to the public, including principles on executive pay and the requirement to comply or explain noncompliance with the UK Corporate Governance Code, the requirements of information in a prospectus before an initial public offering of shares, new share offers, rights issues, disclosure of price sensitive information, or takeover bids for companies.
The London Stock Exchange has had a long tradition of self-regulation. Previous versions of the same kinds of rules were known as the rules on "Admission of Securities to Quotations" or "Admission of Securities to Listing".
In October 2010 the former UK Listing Authority operated as part of the Financial Services Authority, however after the FSA's abolition, it became part of the newly formed Financial Conduct Authority, and since 2017 the reference to the UKLA as a separate body has been phased out.